Malicious PDF — malware analysis report

Static analysis result for SHA-256 5071149a085ecd7f…

MALICIOUS

PDF

42.7 KB Created: 2020-08-07 08:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c91c0255ecafd06e0000b7d8588e0f3 SHA-1: 0fd9b9a9a7d18e0722a50c1722a8d6f2c1189885 SHA-256: 5071149a085ecd7fc25127744547ddb3b70ccae5cfe675850ad1e6fd1c77d7ba
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=billies+bounce+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links to PDF files hosted on platforms like Shopify. The document body contains the malicious URL and appears to be a lure for users to click on it, likely leading to further malicious content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=billies+bounce+pdf
    • http://files.postmarkrecords.com/uploads/1/3/1/6/131607158/jukimasewamuvik.pdf
    • http://files.alleylouisville.com/uploads/1/3/1/8/131871462/ribarudev.pdf
    • http://files.fitpowermke.com/uploads/1/3/1/1/131163738/5211183.pdf
    • http://files.mka-remix.com/uploads/1/3/1/6/131636762/868902.pdf
    • https://cdn.shopify.com/s/files/1/0433/1021/9432/files/gapalisaro.pdf
    • https://cdn.shopify.com/s/files/1/0433/7070/9142/files/vetopomafavukafovemafawa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/70286260333.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3785448733.pdf
    • https://cdn.shopify.com/s/files/1/0437/9282/6517/files/40123047105.pdf
    • https://cdn.shopify.com/s/files/1/0428/7397/9043/files/bronchiectasis_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1374/1471/files/22977729630.pdf
    • https://cdn.shopify.com/s/files/1/0435/6961/0907/files/54068151499.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0791/files/44957006428.pdf
    • https://cdn.shopify.com/s/files/1/0432/2128/7067/files/skf_bearing_housing_dimensions.pdf
    • https://cdn.shopify.com/s/files/1/0430/2998/7489/files/sawiruweri.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesulemenakasisot.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a64.bin
76e826822076def54c243a4cc970c9b2aa312d4c3373a13bca316a7cbebbb44e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A64 5032 bytes
font_01_sfnt_off00007b98.bin
037f2872b3c3bc367ec3187a57febd529c065384c0300f55903e8693573c35af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B98 10120 bytes

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